Edmund Ironside

Edmund Ironside's luck can be gauged by the fact that he married a Danish widow, Algitha (or Edith, or Ealdgyth), had a son by her who spent his life in exile, was then murdered by his wife's brother, leaving a second son born postumously, who vanishes from history. He was also another of those betrayed by Eadric Streona, his brother-in-law.

But he was probably a nice man really (Edmund, not Eadric).